mirror of
https://github.com/RPCSX/llvm.git
synced 2024-11-29 22:50:47 +00:00
d1e1703c39
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114847 91177308-0d34-0410-b5e6-96231b3b80d8
377 lines
15 KiB
C++
377 lines
15 KiB
C++
//===-- LLParser.h - Parser Class -------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines the parser class for .ll files.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_ASMPARSER_LLPARSER_H
|
|
#define LLVM_ASMPARSER_LLPARSER_H
|
|
|
|
#include "LLLexer.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/Type.h"
|
|
#include "llvm/ADT/DenseMap.h"
|
|
#include "llvm/Support/ValueHandle.h"
|
|
#include <map>
|
|
|
|
namespace llvm {
|
|
class Module;
|
|
class OpaqueType;
|
|
class Function;
|
|
class Value;
|
|
class BasicBlock;
|
|
class Instruction;
|
|
class Constant;
|
|
class GlobalValue;
|
|
class MDString;
|
|
class MDNode;
|
|
|
|
/// ValID - Represents a reference of a definition of some sort with no type.
|
|
/// There are several cases where we have to parse the value but where the
|
|
/// type can depend on later context. This may either be a numeric reference
|
|
/// or a symbolic (%var) reference. This is just a discriminated union.
|
|
struct ValID {
|
|
enum {
|
|
t_LocalID, t_GlobalID, // ID in UIntVal.
|
|
t_LocalName, t_GlobalName, // Name in StrVal.
|
|
t_APSInt, t_APFloat, // Value in APSIntVal/APFloatVal.
|
|
t_Null, t_Undef, t_Zero, // No value.
|
|
t_EmptyArray, // No value: []
|
|
t_Constant, // Value in ConstantVal.
|
|
t_InlineAsm, // Value in StrVal/StrVal2/UIntVal.
|
|
t_MDNode, // Value in MDNodeVal.
|
|
t_MDString // Value in MDStringVal.
|
|
} Kind;
|
|
|
|
LLLexer::LocTy Loc;
|
|
unsigned UIntVal;
|
|
std::string StrVal, StrVal2;
|
|
APSInt APSIntVal;
|
|
APFloat APFloatVal;
|
|
Constant *ConstantVal;
|
|
MDNode *MDNodeVal;
|
|
MDString *MDStringVal;
|
|
ValID() : APFloatVal(0.0) {}
|
|
|
|
bool operator<(const ValID &RHS) const {
|
|
if (Kind == t_LocalID || Kind == t_GlobalID)
|
|
return UIntVal < RHS.UIntVal;
|
|
assert((Kind == t_LocalName || Kind == t_GlobalName) &&
|
|
"Ordering not defined for this ValID kind yet");
|
|
return StrVal < RHS.StrVal;
|
|
}
|
|
};
|
|
|
|
class LLParser {
|
|
public:
|
|
typedef LLLexer::LocTy LocTy;
|
|
private:
|
|
LLVMContext &Context;
|
|
LLLexer Lex;
|
|
Module *M;
|
|
|
|
// Instruction metadata resolution. Each instruction can have a list of
|
|
// MDRef info associated with them.
|
|
//
|
|
// The simpler approach of just creating temporary MDNodes and then calling
|
|
// RAUW on them when the definition is processed doesn't work because some
|
|
// instruction metadata kinds, such as dbg, get stored in the IR in an
|
|
// "optimized" format which doesn't participate in the normal value use
|
|
// lists. This means that RAUW doesn't work, even on temporary MDNodes
|
|
// which otherwise support RAUW. Instead, we defer resolving MDNode
|
|
// references until the definitions have been processed.
|
|
struct MDRef {
|
|
SMLoc Loc;
|
|
unsigned MDKind, MDSlot;
|
|
};
|
|
DenseMap<Instruction*, std::vector<MDRef> > ForwardRefInstMetadata;
|
|
|
|
// Type resolution handling data structures.
|
|
std::map<std::string, std::pair<PATypeHolder, LocTy> > ForwardRefTypes;
|
|
std::map<unsigned, std::pair<PATypeHolder, LocTy> > ForwardRefTypeIDs;
|
|
std::vector<PATypeHolder> NumberedTypes;
|
|
std::vector<TrackingVH<MDNode> > NumberedMetadata;
|
|
std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> > ForwardRefMDNodes;
|
|
struct UpRefRecord {
|
|
/// Loc - This is the location of the upref.
|
|
LocTy Loc;
|
|
|
|
/// NestingLevel - The number of nesting levels that need to be popped
|
|
/// before this type is resolved.
|
|
unsigned NestingLevel;
|
|
|
|
/// LastContainedTy - This is the type at the current binding level for
|
|
/// the type. Every time we reduce the nesting level, this gets updated.
|
|
const Type *LastContainedTy;
|
|
|
|
/// UpRefTy - This is the actual opaque type that the upreference is
|
|
/// represented with.
|
|
OpaqueType *UpRefTy;
|
|
|
|
UpRefRecord(LocTy L, unsigned NL, OpaqueType *URTy)
|
|
: Loc(L), NestingLevel(NL), LastContainedTy((Type*)URTy),
|
|
UpRefTy(URTy) {}
|
|
};
|
|
std::vector<UpRefRecord> UpRefs;
|
|
|
|
// Global Value reference information.
|
|
std::map<std::string, std::pair<GlobalValue*, LocTy> > ForwardRefVals;
|
|
std::map<unsigned, std::pair<GlobalValue*, LocTy> > ForwardRefValIDs;
|
|
std::vector<GlobalValue*> NumberedVals;
|
|
|
|
// References to blockaddress. The key is the function ValID, the value is
|
|
// a list of references to blocks in that function.
|
|
std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >
|
|
ForwardRefBlockAddresses;
|
|
|
|
Function *MallocF;
|
|
public:
|
|
LLParser(MemoryBuffer *F, SourceMgr &SM, SMDiagnostic &Err, Module *m) :
|
|
Context(m->getContext()), Lex(F, SM, Err, m->getContext()),
|
|
M(m), MallocF(NULL) {}
|
|
bool Run();
|
|
|
|
LLVMContext& getContext() { return Context; }
|
|
|
|
private:
|
|
|
|
bool Error(LocTy L, const Twine &Msg) const {
|
|
return Lex.Error(L, Msg);
|
|
}
|
|
bool TokError(const Twine &Msg) const {
|
|
return Error(Lex.getLoc(), Msg);
|
|
}
|
|
|
|
/// GetGlobalVal - Get a value with the specified name or ID, creating a
|
|
/// forward reference record if needed. This can return null if the value
|
|
/// exists but does not have the right type.
|
|
GlobalValue *GetGlobalVal(const std::string &N, const Type *Ty, LocTy Loc);
|
|
GlobalValue *GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc);
|
|
|
|
// Helper Routines.
|
|
bool ParseToken(lltok::Kind T, const char *ErrMsg);
|
|
bool EatIfPresent(lltok::Kind T) {
|
|
if (Lex.getKind() != T) return false;
|
|
Lex.Lex();
|
|
return true;
|
|
}
|
|
bool ParseOptionalToken(lltok::Kind T, bool &Present) {
|
|
if (Lex.getKind() != T) {
|
|
Present = false;
|
|
} else {
|
|
Lex.Lex();
|
|
Present = true;
|
|
}
|
|
return false;
|
|
}
|
|
bool ParseStringConstant(std::string &Result);
|
|
bool ParseUInt32(unsigned &Val);
|
|
bool ParseUInt32(unsigned &Val, LocTy &Loc) {
|
|
Loc = Lex.getLoc();
|
|
return ParseUInt32(Val);
|
|
}
|
|
bool ParseOptionalAddrSpace(unsigned &AddrSpace);
|
|
bool ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind);
|
|
bool ParseOptionalLinkage(unsigned &Linkage, bool &HasLinkage);
|
|
bool ParseOptionalLinkage(unsigned &Linkage) {
|
|
bool HasLinkage; return ParseOptionalLinkage(Linkage, HasLinkage);
|
|
}
|
|
bool ParseOptionalVisibility(unsigned &Visibility);
|
|
bool ParseOptionalCallingConv(CallingConv::ID &CC);
|
|
bool ParseOptionalAlignment(unsigned &Alignment);
|
|
bool ParseOptionalStackAlignment(unsigned &Alignment);
|
|
bool ParseOptionalCommaAlign(unsigned &Alignment, bool &AteExtraComma);
|
|
bool ParseIndexList(SmallVectorImpl<unsigned> &Indices,bool &AteExtraComma);
|
|
bool ParseIndexList(SmallVectorImpl<unsigned> &Indices) {
|
|
bool AteExtraComma;
|
|
if (ParseIndexList(Indices, AteExtraComma)) return true;
|
|
if (AteExtraComma)
|
|
return TokError("expected index");
|
|
return false;
|
|
}
|
|
|
|
// Top-Level Entities
|
|
bool ParseTopLevelEntities();
|
|
bool ValidateEndOfModule();
|
|
bool ParseTargetDefinition();
|
|
bool ParseDepLibs();
|
|
bool ParseModuleAsm();
|
|
bool ParseUnnamedType();
|
|
bool ParseNamedType();
|
|
bool ParseDeclare();
|
|
bool ParseDefine();
|
|
|
|
bool ParseGlobalType(bool &IsConstant);
|
|
bool ParseUnnamedGlobal();
|
|
bool ParseNamedGlobal();
|
|
bool ParseGlobal(const std::string &Name, LocTy Loc, unsigned Linkage,
|
|
bool HasLinkage, unsigned Visibility);
|
|
bool ParseAlias(const std::string &Name, LocTy Loc, unsigned Visibility);
|
|
bool ParseStandaloneMetadata();
|
|
bool ParseNamedMetadata();
|
|
bool ParseMDString(MDString *&Result);
|
|
bool ParseMDNodeID(MDNode *&Result);
|
|
bool ParseMDNodeID(MDNode *&Result, unsigned &SlotNo);
|
|
|
|
// Type Parsing.
|
|
bool ParseType(PATypeHolder &Result, bool AllowVoid = false);
|
|
bool ParseType(PATypeHolder &Result, LocTy &Loc, bool AllowVoid = false) {
|
|
Loc = Lex.getLoc();
|
|
return ParseType(Result, AllowVoid);
|
|
}
|
|
bool ParseTypeRec(PATypeHolder &H);
|
|
bool ParseStructType(PATypeHolder &H, bool Packed);
|
|
bool ParseArrayVectorType(PATypeHolder &H, bool isVector);
|
|
bool ParseFunctionType(PATypeHolder &Result);
|
|
PATypeHolder HandleUpRefs(const Type *Ty);
|
|
|
|
// Function Semantic Analysis.
|
|
class PerFunctionState {
|
|
LLParser &P;
|
|
Function &F;
|
|
std::map<std::string, std::pair<Value*, LocTy> > ForwardRefVals;
|
|
std::map<unsigned, std::pair<Value*, LocTy> > ForwardRefValIDs;
|
|
std::vector<Value*> NumberedVals;
|
|
|
|
/// FunctionNumber - If this is an unnamed function, this is the slot
|
|
/// number of it, otherwise it is -1.
|
|
int FunctionNumber;
|
|
public:
|
|
PerFunctionState(LLParser &p, Function &f, int FunctionNumber);
|
|
~PerFunctionState();
|
|
|
|
Function &getFunction() const { return F; }
|
|
|
|
bool FinishFunction();
|
|
|
|
/// GetVal - Get a value with the specified name or ID, creating a
|
|
/// forward reference record if needed. This can return null if the value
|
|
/// exists but does not have the right type.
|
|
Value *GetVal(const std::string &Name, const Type *Ty, LocTy Loc);
|
|
Value *GetVal(unsigned ID, const Type *Ty, LocTy Loc);
|
|
|
|
/// SetInstName - After an instruction is parsed and inserted into its
|
|
/// basic block, this installs its name.
|
|
bool SetInstName(int NameID, const std::string &NameStr, LocTy NameLoc,
|
|
Instruction *Inst);
|
|
|
|
/// GetBB - Get a basic block with the specified name or ID, creating a
|
|
/// forward reference record if needed. This can return null if the value
|
|
/// is not a BasicBlock.
|
|
BasicBlock *GetBB(const std::string &Name, LocTy Loc);
|
|
BasicBlock *GetBB(unsigned ID, LocTy Loc);
|
|
|
|
/// DefineBB - Define the specified basic block, which is either named or
|
|
/// unnamed. If there is an error, this returns null otherwise it returns
|
|
/// the block being defined.
|
|
BasicBlock *DefineBB(const std::string &Name, LocTy Loc);
|
|
};
|
|
|
|
bool ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
|
|
PerFunctionState *PFS);
|
|
|
|
bool ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS);
|
|
bool ParseValue(const Type *Ty, Value *&V, LocTy &Loc,
|
|
PerFunctionState &PFS) {
|
|
Loc = Lex.getLoc();
|
|
return ParseValue(Ty, V, PFS);
|
|
}
|
|
|
|
bool ParseTypeAndValue(Value *&V, PerFunctionState &PFS);
|
|
bool ParseTypeAndValue(Value *&V, LocTy &Loc, PerFunctionState &PFS) {
|
|
Loc = Lex.getLoc();
|
|
return ParseTypeAndValue(V, PFS);
|
|
}
|
|
bool ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
|
|
PerFunctionState &PFS);
|
|
bool ParseTypeAndBasicBlock(BasicBlock *&BB, PerFunctionState &PFS) {
|
|
LocTy Loc;
|
|
return ParseTypeAndBasicBlock(BB, Loc, PFS);
|
|
}
|
|
|
|
|
|
struct ParamInfo {
|
|
LocTy Loc;
|
|
Value *V;
|
|
unsigned Attrs;
|
|
ParamInfo(LocTy loc, Value *v, unsigned attrs)
|
|
: Loc(loc), V(v), Attrs(attrs) {}
|
|
};
|
|
bool ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
|
|
PerFunctionState &PFS);
|
|
|
|
// Constant Parsing.
|
|
bool ParseValID(ValID &ID, PerFunctionState *PFS = NULL);
|
|
bool ParseGlobalValue(const Type *Ty, Constant *&V);
|
|
bool ParseGlobalTypeAndValue(Constant *&V);
|
|
bool ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts);
|
|
bool ParseMetadataListValue(ValID &ID, PerFunctionState *PFS);
|
|
bool ParseMetadataValue(ValID &ID, PerFunctionState *PFS);
|
|
bool ParseMDNodeVector(SmallVectorImpl<Value*> &, PerFunctionState *PFS);
|
|
bool ParseInstructionMetadata(Instruction *Inst, PerFunctionState *PFS);
|
|
|
|
// Function Parsing.
|
|
struct ArgInfo {
|
|
LocTy Loc;
|
|
PATypeHolder Type;
|
|
unsigned Attrs;
|
|
std::string Name;
|
|
ArgInfo(LocTy L, PATypeHolder Ty, unsigned Attr, const std::string &N)
|
|
: Loc(L), Type(Ty), Attrs(Attr), Name(N) {}
|
|
};
|
|
bool ParseArgumentList(std::vector<ArgInfo> &ArgList,
|
|
bool &isVarArg, bool inType);
|
|
bool ParseFunctionHeader(Function *&Fn, bool isDefine);
|
|
bool ParseFunctionBody(Function &Fn);
|
|
bool ParseBasicBlock(PerFunctionState &PFS);
|
|
|
|
// Instruction Parsing. Each instruction parsing routine can return with a
|
|
// normal result, an error result, or return having eaten an extra comma.
|
|
enum InstResult { InstNormal = 0, InstError = 1, InstExtraComma = 2 };
|
|
int ParseInstruction(Instruction *&Inst, BasicBlock *BB,
|
|
PerFunctionState &PFS);
|
|
bool ParseCmpPredicate(unsigned &Pred, unsigned Opc);
|
|
|
|
int ParseRet(Instruction *&Inst, BasicBlock *BB, PerFunctionState &PFS);
|
|
bool ParseBr(Instruction *&Inst, PerFunctionState &PFS);
|
|
bool ParseSwitch(Instruction *&Inst, PerFunctionState &PFS);
|
|
bool ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS);
|
|
bool ParseInvoke(Instruction *&Inst, PerFunctionState &PFS);
|
|
|
|
bool ParseArithmetic(Instruction *&I, PerFunctionState &PFS, unsigned Opc,
|
|
unsigned OperandType);
|
|
bool ParseLogical(Instruction *&I, PerFunctionState &PFS, unsigned Opc);
|
|
bool ParseCompare(Instruction *&I, PerFunctionState &PFS, unsigned Opc);
|
|
bool ParseCast(Instruction *&I, PerFunctionState &PFS, unsigned Opc);
|
|
bool ParseSelect(Instruction *&I, PerFunctionState &PFS);
|
|
bool ParseVA_Arg(Instruction *&I, PerFunctionState &PFS);
|
|
bool ParseExtractElement(Instruction *&I, PerFunctionState &PFS);
|
|
bool ParseInsertElement(Instruction *&I, PerFunctionState &PFS);
|
|
bool ParseShuffleVector(Instruction *&I, PerFunctionState &PFS);
|
|
int ParsePHI(Instruction *&I, PerFunctionState &PFS);
|
|
bool ParseCall(Instruction *&I, PerFunctionState &PFS, bool isTail);
|
|
int ParseAlloc(Instruction *&I, PerFunctionState &PFS,
|
|
BasicBlock *BB = 0, bool isAlloca = true);
|
|
bool ParseFree(Instruction *&I, PerFunctionState &PFS, BasicBlock *BB);
|
|
int ParseLoad(Instruction *&I, PerFunctionState &PFS, bool isVolatile);
|
|
int ParseStore(Instruction *&I, PerFunctionState &PFS, bool isVolatile);
|
|
bool ParseGetResult(Instruction *&I, PerFunctionState &PFS);
|
|
int ParseGetElementPtr(Instruction *&I, PerFunctionState &PFS);
|
|
int ParseExtractValue(Instruction *&I, PerFunctionState &PFS);
|
|
int ParseInsertValue(Instruction *&I, PerFunctionState &PFS);
|
|
|
|
bool ResolveForwardRefBlockAddresses(Function *TheFn,
|
|
std::vector<std::pair<ValID, GlobalValue*> > &Refs,
|
|
PerFunctionState *PFS);
|
|
};
|
|
} // End llvm namespace
|
|
|
|
#endif
|